Roy's Restaurant - Hilton Guam Resort & Spa is located in Tamuning, Guam on 202 Hilton Rd. Roy's Restaurant - Hilton Guam Resort & Spa is rated 3 out of 5 in the category hawaiian in Guam. Hawaiian Fusion cuisine is highlighted by an array of succulent seafood's, sizzling meats, the irresistible warm chocolate soufflé, and much more. Enjoy your dinner in a relaxing and elegant setting.